Why do u crash?????

gistfile1.txt

  <entry>
    <record>10589</record>
    <time>2014/03/09 11:56:50.360</time>
    <type>Error</type>
    <source>Editor or Editor Extension</source>
    <description>System.InvalidOperationException: Attempting to get the view from an adapter in state Closed
   at Microsoft.VisualStudio.Editor.Implementation.SimpleTextViewWindow.get_WpfTextViewHost()
   at Microsoft.VisualStudio.Editor.Implementation.SimpleTextViewWindow.ClearCommandContext()
   at Microsoft.VisualStudio.Editor.Implementation.VsMouseProcessor.PostprocessMouseLeftButtonUp(MouseButtonEventArgs e)
   at Microsoft.VisualStudio.Text.Utilities.WpfMouseProcessor.&lt;&gt;c__DisplayClass30.&lt;UIElement_MouseLeftButtonUp&gt;b__29()
   at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call)</description>
  </entry>
  
Complete stack trace:

Microsoft.VisualStudio.Editor.Implementation.dll!Microsoft.VisualStudio.Editor.Implementation.SimpleTextViewWindow.WpfTextViewHost.get()	
Microsoft.VisualStudio.Editor.Implementation.dll!Microsoft.VisualStudio.Editor.Implementation.SimpleTextViewWindow.ClearCommandContext()	
Microsoft.VisualStudio.Editor.Implementation.dll!Microsoft.VisualStudio.Editor.Implementation.VsMouseProcessor.PostprocessMouseLeftButtonUp(System.Windows.Input.MouseButtonEventArgs e)	
Microsoft.VisualStudio.Platform.VSEditor.dll!Microsoft.VisualStudio.Text.Utilities.WpfMouseProcessor.UIElement_MouseLeftButtonUp.AnonymousMethod__29()	
Microsoft.VisualStudio.Platform.VSEditor.dll!Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(object errorSource = null, System.Action call)	
Microsoft.VisualStudio.Platform.VSEditor.dll!Microsoft.VisualStudio.Text.Utilities.WpfMouseProcessor.UIElement_MouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)	
PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget)	
PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target)	
PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs)	
PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source = {Microsoft.VisualStudio.Text.Editor.Implementation.WpfTextView}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs}, bool reRaised = true)	
PresentationCore.dll!System.Windows.UIElement.ReRaiseEventAs(System.Windows.DependencyObject sender = {Microsoft.VisualStudio.Text.Editor.Implementation.WpfTextView}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs}, System.Windows.RoutedEvent newEvent)	
PresentationCore.dll!System.Windows.UIElement.OnMouseUpThunk(object sender, System.Windows.Input.MouseButtonEventArgs e)	
PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget)	
PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target)	
PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs)	
PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source = {Microsoft.VisualStudio.Text.Editor.Implementation.SelectionAdornment}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs}, bool reRaised = false)	
PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender = {Microsoft.VisualStudio.Text.Editor.Implementation.SelectionAdornment}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs})	
PresentationCore.dll!System.Windows.UIElement.RaiseTrustedEvent(System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs})	
PresentationCore.dll!System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs args, bool trusted)	
PresentationCore.dll!System.Windows.Input.InputManager.ProcessStagingArea()	
PresentationCore.dll!System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs input)	
PresentationCore.dll!System.Windows.Input.InputProviderSite.ReportInput(System.Windows.Input.InputReport inputReport)	
PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.ReportInput(System.IntPtr hwnd, System.Windows.Input.InputMode mode, int timestamp, System.Windows.Input.RawMouseActions actions, int x, int y, int wheel)	
PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.FilterMessage(System.IntPtr hwnd = 0x000217b0, MS.Internal.Interop.WindowMessage msg = WM_LBUTTONUP, System.IntPtr wParam = 0x00000008, System.IntPtr lParam = 0x025f0247, ref bool handled = false)	
PresentationCore.dll!System.Windows.Interop.HwndSource.InputFilterMessage(System.IntPtr hwnd = 0x000217b0, int msg = 0x00000202, System.IntPtr wParam = 0x00000008, System.IntPtr lParam = 0x025f0247, ref bool handled = false)	
WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd = 0x000217b0, int msg = 0x00000202, System.IntPtr wParam = 0x00000008, System.IntPtr lParam = 0x025f0247, ref bool handled = false)	
WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o)	
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs)	
WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source = {System.Windows.Threading.Dispatcher}, System.Delegate method, object args, int numArgs, System.Delegate catchHandler = null)	
WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs)	
WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd = 0x000217b0, int msg = 0x00000202, System.IntPtr wParam = 0x00000008, System.IntPtr lParam = 0x025f0247)	

Also, the code in VsMouseProcessor could be updated to check the IsTextViewHostAccessible property.

if (SimpleTextViewWindow != null && SimpleTextViewWindow.IsTextViewHostAccessible)
{
    SimpleTextViewWindow.ClearCommandContext();
}